Machine for squeezing and compressing metallic bodies



EBEN. A. LESTER, oE BOSTON, MASSACHUSETTS.

MACHINE FOR SQUEEZING AND COMPRESSING METALLIC BODIES.

Specification of Letters .Patent No. 10,410, datedJanuary 10, 1854.

To all whom t may concern:

Be it known that I, EBENEZER A. LESTER,

' of Boston, in the county of Suffolk and State of Massachusetts, haveinventedV a new and Improved Variable Adjustable Screw and Toggle JointCompressor, Hammer, or Squeezer for Squeezing or Compressing Metallic orother Substances; and

' I do hereby declare that the following is a true, full, and exactdescription thereof, reference being had to the accompanying drawingsand to theletters of reference markedthereon.

The object of my invention is to make a hammer or squeezer, for reducingor comf pressing masses of metal or other substances, which shall have apositive reciprocating motion and yet have its point of action on theSubstance to be worked variable as the mass is reduced, comp-ressed orhammered down, and my said invention consists in giving the positivereciprocating motion to the hammer by a toggle joint having a movablefulcrum to let down the hammer as the substance acted upon is beingreduced, in combination with a bed composed of two rollers, or theequivalents thereof, to support and turn the ball or other substance forthe repeated actions of the hammer.

Said machine consists of the following parts, as represented in theannexed drawings, viz.: The hammer, presser, or compressor (a) isconnected to one end (b) of one arm of the toggle-joint (A) the oppositeend of the other arm (c) of the togglejoint is connected by a joint to ascrew and cross-head (cl) in guides (a1 m) having a revolving nut (e)inserted into and through the cross-piece or cap-piece (f) whichconnects the cheeks or housings (g g) of the frame of the machine. Thisscrew by the geared nut (it 71,) is for projecting andretracting thehammer (a) t-o and from the material that is being operated on, to agreater or less extent, as may be required.l

The arms (b, c) of the toggle joint, (A) and the joints at the ends ofthose arms, are attached at and worked bythe connecting rod (7c) andcrank (Z) of the shaft, (m and t). The hammer (a) is over, and parallelwith, two horizontal parallel rollers (n n) the central diameter of thehammer is in cheeks or guide-pieces v(0a a) midway, or as nearv it asmay be, between and parallel with the axes ofthe said two rollers.

`'llie'hammer mayv be a'block with plain or other surfaces,asrepresented in the drawing, or have a plainl .or fluted or figuredcylinder inserted into it. Y

The guards or rubbers (0),-and another at the end of the screw, and hidby the frame in the drawings, are placed between the rollers (a n) at,or near the endsthereof, for the purpose of upsettingorsolidifying theendsUof-theinaterial, andthe rubbers mayv be'xed, or one or both maybemovable, so that they may be made to Vapproach to or recede from eachother, by means of a screw (p) or screws, ofv one or more threads or bytoggle-joints constructed similar to that of the hammer before'described. The rollers (a a) are to have gearing (Q g) such as kto`revolve either toward or from the front of the machine, both in thesame direction, simultaneously, by

connecting rod, (R) as to bring thevarms of the toggle-joint into a linewith each other, either once or twice in each revolution ofV the crank(Z); that is', the traverse of the toggle joint, at each revolutionofthat crank may be wholly on one side of the straight line of the arms ofthat joint, at the moment of greatest compression, or it-may traverseacross such straight line and back again, at each revolution of thecrank (Z).

In the foregoing description of themachine and its operations, therollers are supposed to be continuing to revolve, while the pressure isgiven by the hammer (a) and they may so continue to revolve inoperations upon substances which owing to their temperature at the time,or to their essential character, are notof a solid and rigidconsistency. But if it be desirable, on` account of the more solid and'unyielding nature of the material to be operated on, or for any otherreason, to suspendthe revo-v lutions of (n a) ,at the time ofcompressing, this .is effected by the following substitutions'andmodications, see Fig. 2, after taking off the pulleys (B and C)viZLAttach the ratchet-wheel (E) to the shaft F is a slotted crank,instead of the pulley 75 being connected bythe pinion (r) on the drivingshaft (s) which meshes into their respective wheels like the lowerrollers of a C). Gris a crank-pin, variable in a slot.

` H is the slot. T is the feed-arm for Working the ratchet-Wheel E. Ateach revolution of the crank F, the feed-arm T will Abe eX- tended toand Withdrawn from the ratchet-V Wheel E, and during the Withdrawal .the

rollers Will cease to revolve; that is, during the time the pressure isgiven, and Whenthe feed-arm is extended. by the crankV the ratchet-Wheeland rollers Will be moved such part of a revolution as may be requiredlfBy thisarrangement the rotary motion of the rollers lis changed from acontinuous to a regularly intermittent motion. Y Y

l From the foregoing it will be seen that however the size or form ofthe mass operated upon may be changed by the action of the hammer orcompress, the hammer can be made to follow itYnotWithst-anding its rangeof, motion imparted by the toggle-joint, is invariable. Y y

What I claim as my invention and desire to secure byV Letters Patent, is

Giving tov the hammer or compressor a positive reciprocating motion bymeans of lthe toggle joint Vhaving a movable fulcrum to letdown thehammer as the substance acted upon is being reduced, substantially asdescribed, Whenthis is combined with the bed composed of rollers, or theequivalent thereof, to hold and turn the ball or otherbody for vtherepeated actions of the hammers, asset forth. L

In `testimony whereof, I, the said" EBE NnzER A. lLEsTER heretosubscribemy name in the presence of the Witnesses Whose names are heretosubscribed, -on the third day of September A. D. 1851. i

i i y EBEN. -A.\LESTER. Y n Signed in presence ofn 1WILLARD PHILLIPS,

BENJ. F. STEVENS.

